Seiren Gakuen Saimin Keitai [English], by Yokoyama Naoki
Weird story. The male hero is bullied, a kind and stern girl is always protecting him. So, he puts his only skill (programming) to use, and creates an hypnotizing app. That he uses on his bullies to make them his servants.
… … And, naturally, to fuck a lot and without real consent the girl that protected him, and every other woman in school, until the school turns into his braindead harem.
The end, he’s the king, he feels so superior.
Oh, Japan.
–Update: excellent news, this post has become obsolete! This share is now part of a complete hentai manga, called “Siren – Kyousei Saimin Keitai“.
To get it, please follow that link
Hmmm, at least they skipped the step where the bullies get hold of his hypno app and the proceed to netorare everything away from him.
Could be worse, I suppose. The hypno app could backfire and the girls would be fucking his brains out instead of the reverse. :p
That's not backfiring, that's called justice.
Or the girls could make the male bullies become gay and teach his anus a lesson he'll never forget. I'd have vouched for this, actually. First time I'd be YAY YAOI FOR THE WIN !
To be fair to the Japanese genre, this is ALWAYS how it goes. Non-assertive guy gets abused by everyone and then massively over-compensates. Think of it as commentary on the human condition, that we'd all be bullies if we had the power to remake others. Or maybe it'd just be a crappy story if a well-meaning social engineer started changing the world into Nirvana.